Figure 71
Evergreen
BASIC mode PRIORITY options (USER MODE must be set to BASIC)
PRIORITY 1, 2, 3 menus, BASIC mode
Boiler Model, Altitude and Fuel Type are
critical settings.
Failure to set correctly could
result in severe personal injury, death or substantial
property damage.
1. Access contractor menus by pressing and holding the UP and
DOWN arrow keys at the same time for 7 seconds.
2. See Figure 69, page 79 for the screen sequences up to the
CONTRACTOR menu.
MENU ITEM
DESCRIPTION
INPUTS ASSIGNED
• Lists all the inputs already assigned to this PRIORITY.
Inputs will be listed as 1, 2, 3.
• Shows NONE if there are no inputs assigned to this
priority .
SYSTEM TYPE
• Select the system type for this PRIORITY, based
on the heating terminal units in the system (see
Figure 68, page 78 ). Use the CUSTOM selection to set
the control for a different system type. The factory preset
values for SUPPLY MAX, SUPPLY MIN, OD RESET MAX
and OD RESET MIN are chosen based on the normal best
setting for the terminal units.
TARGET MOD
SENSOR
• Choose SYSTEM SUPPLY or BOILER OUT to determine
which will be the primary temperature sensor. The control
will modulate boiler input to reach the TARGET tempera-
ture. (Default is System Supply.) If system sensors are not
used, boiler defaults to using heat exchanger outlet sensor
in place of system sensor.
• Not adjustable in Basic Mode, see Advanced Manual for
information on adjusting this parameter.
TARGET ADJUST
• Select how target temperature is calculated by control:
NONE (no reset, fi xed target temperature), 0-10V (target
temperature based on analog input from remote source),
ODT (outdoor reset operation; default setting).
• Not adjustable in Basic Mode, see Advanced Manual for
information on adjusting this parameter.
SUPPLY MAX
• Set SUPPLY MAX to the required supply water tempera-
ture for the system at design maximum heat loss (typically
180 °F for fi nned tube baseboard on new installations.)
SUPPLY MIN
• SUPPLY MIN should equal the desired minimum supply
water temperature for the system.
• This line is not shown on priorities confi gured as DHW
system type or Heating system type, if outdoor tempera-
ture sensor not used. See Advanced Manual for informa-
tion on adjusting this parameter .
OD RESET MAX
(Not shown for
Priority 1 by default)
• OD RESET MAX is the outdoor temperature at which the
target temperature reaches its minimum (SUPPLY MIN).
• This line is not shown on priorities confi gured as DHW
system type or Heating system type, if outdoor tempera-
ture sensor not used. See Advanced Manual for informa-
tion on adjusting this parameter .
OD RESET MIN
• OD RESET MIN means the outdoor temperature at
which the target temperature reaches its maximum value
(SUPPLY MAX).
• OD RESET MIN should equal the ODT (outdoor design
temperature) for the installation’s location.
• This line is not shown on priorities confi gured as DHW
system type or Heating system type, if outdoor tempera-
ture sensor not used. See Advanced Manual for informa-
tion on adjusting this parameter .
Screens shown above are typical only.
Actual screens depend on control
settings chosen.
Part number 550-100-191/0917
81
®
g
as-fired water boiler —
70/110/155
Boiler Manual
Содержание Evergreen EVG 110
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